Hi Jackie here, been doing some thinking about what to sketch up/ prototype with Tyvek for a skateboard bag.  I am going to try an Origami design for skateboard bag.  Partly inspired by the PBS documentary Between the Folds and other bags I have seen.

Origami (折り紙?, from ori meaning "folding", and kami meaning "paper" (kami changes to gami due to rendaku) is the traditional Japanese art of paper folding
http://en.wikipedia.org/wiki/Origami


skateboard is a type of sports equipment used primarily for the activity of skateboarding.
http://en.wikipedia.org/wiki/Skateboard


Bag (also known regionally as a sack) is a simple tool in the form of a non-rigid container.
http://en.wikipedia.org/wiki/Bag

Inspiration/ reference web sites:
http://www.pbs.org/independentlens/between-the-folds/
http://jewswar.com/30/paper-bag-origami/
http://tehtarikjunction.blogspot.com/2011/04/how-to-make-paper-bag.html
http://lifehacker.com/5289791/turn-a-square-of-cloth-into-a-multi+purpose-bag
http://scissorsandpaperrock.blogspot.com/2010/12/paper-bags.html
http://origamiblog.com/origami-bag/2007/09/27
http://news.sciencemag.org/sciencenow/2011/03/paper-plastic-or-steel.html

whats out there:
https://www.google.com/search?q=skateboard+bag&hl=en&tbm=isch&tbo=u&source=univ&sa=X&ei=MHwlUeXrE8rn0gGZjoDQBQ&ved=0CFgQsAQ&biw=846&bih=502

See you soon,
Jackie!